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asbjoern85 avatar image
asbjoern85 asked

Smart Solar MPPT 100/20-48 disables load output about once a day

Hi,

My Smart Solar MPPT 100/20-48 disables load output for a few seconds about once a day. I'm running the latest firmware. It get's really annoying as I have a gass alarm that beeps LOUDLY 5 times when it's gets power back, really fun when it happens while were sleeping.


Any idea what's causing this? Is there an event log I can review somewhere?

MPPT SmartSolar
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Hi @Asbjoern85

What firmware version is running on the MPPT?

Kind regards,

Thiemo van Engelen

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asbjoern85 avatar image asbjoern85 Thiemo van Engelen (Victron Energy staff) ♦ commented ·

It's at the cabin, so I can't check. It was the latest firmware available when I checked the 17th of January.

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Thiemo van Engelen (Victron Energy staff) avatar image Thiemo van Engelen (Victron Energy staff) ♦ asbjoern85 commented ·

Do you perhaps know which VictronConnect version you had / have installed? You can find this under Settings.

Kind regards,

Thiemo van Engelen

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Thiemo van Engelen (Victron Energy staff) avatar image Thiemo van Engelen (Victron Energy staff) ♦ asbjoern85 commented ·

And did you also go into the settings menu to check if it was the latest firmware version or not? I ask this, because in the past, VictronConnect would update to every new firmware version at the moment that you connect. Currently, VictronConnect does not always force a firmware update. It does require this (most of the time) when you go into the settings menu and want to change a setting.

I mention this all because the problem you describe looks like a problem that is solved in Firmware version 1.54, which is included in VictronConnect 5.35. It is however not mandatory to update to this firmware version if the MPPT has version 1.50 or newer. IT only needs to be updated to 1.54 when you want to change a setting. And I believe the Product Info page also shows whether the latest firmware is installed or not.

Kind regards,

Thiemo van Engelen

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4 Answers
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asbjoern85 answered ·

I can add to the story that the 100/20-48 is new and has done this from the beginning. The Smart Solar MPPT 75/15 it replaced worked perfectly.

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Thiemo van Engelen (Victron Energy staff) avatar image
Thiemo van Engelen (Victron Energy staff) answered ·

Hi,

The load output of the MPPT is also disabled for 1.5 seconds when an overload situation is detected on the load output. This would mean a load current >20 Amps, even for a very short spike. Could this be the case in your situation? Were there any other changes in the DC system when it was switched to the 100/20-48V?

Kind regards,

Thiemo van Engelen

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asbjoern85 avatar image asbjoern85 commented ·

Hi,

I doubt very much there was an overload event, it happened during the night in most cases with a more or less constant load of ~6W. If I switch on all DC devices at the same time, the load is still less than 20A.

The other change to the DC system was going from 12V to 24V and the addition of Orion 24-12 DC-DC convertes.

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asbjoern85 avatar image asbjoern85 asbjoern85 commented ·

I can add that I'm not sure if the MPPT disables the output momentarily, or if it crashes and reboots with the same result.

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Thiemo van Engelen (Victron Energy staff) avatar image
Thiemo van Engelen (Victron Energy staff) answered ·

Hi @Asbjoern85

I was wondering whether you were already able to test if the problem also occurs when the load output setting is not set to "Battery Life"?

Kind regards,

Thiemo van Engelen

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asbjoern85 avatar image asbjoern85 commented ·

Hi, i did change the setting from "Battery life" to one of the other options, it still happened twice this weekend.

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Thiemo van Engelen (Victron Energy staff) avatar image
Thiemo van Engelen (Victron Energy staff) answered ·

Hi,

This problem should be solved with MPPT firmware version 1.56, included in VictronConnect version v5.40. Can you please test and confirm that it is now indeed solved?

Kind regards,

Thiemo van Engelen

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